CVE-2026-16827

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2026-08-19. A secondary CVSS source baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to the use of an uninitialized stack pointer.

CVSS v3
5.9
EG Score
5.9MEDIUMmedium confidence
EG Risk
31
EG Risk 31/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity59% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
35th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 19, 2026

Last Modified

August 24, 2026

Advisory Details (1)

Auto-updated Aug 19, 2026
Patch available.
generic

Security Bulletin: Vulnerabilities in IBM AIX and PowerVM VIOS

https://www.ibm.com/support/pages/node/7283858

Vendor Advisories for CVE-2026-16827(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 74× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 124 total refreshes for this CVE.

  1. 2026-10-05 17:42 UTCEPSS rescore
  2. 2026-10-05 06:11 UTCEG score recompute
  3. 2026-10-05 06:11 UTCGHSA enrichment
  4. 2026-10-04 23:21 UTCEPSS rescore
  5. 2026-10-04 06:41 UTCEG score recompute
  6. 2026-10-04 06:41 UTCGHSA enrichment
  7. 2026-10-03 14:25 UTCEPSS rescore
  8. 2026-10-03 07:12 UTCEG score recompute
  9. 2026-10-03 07:12 UTCGHSA enrichment
  10. 2026-10-02 07:41 UTCEG score recompute
  11. 2026-10-02 07:40 UTCGHSA enrichment
  12. 2026-10-01 19:49 UTCEPSS rescore
  13. 2026-10-01 08:09 UTCEG score recompute
  14. 2026-10-01 08:09 UTCGHSA enrichment
  15. 2026-09-30 15:02 UTCEPSS rescore
  16. 2026-09-30 08:40 UTCEG score recompute
  17. 2026-09-30 08:40 UTCGHSA enrichment
  18. 2026-09-29 15:20 UTCEPSS rescore
  19. 2026-09-29 05:06 UTCEG score recompute
  20. 2026-09-29 05:06 UTCGHSA enrichment
  21. 2026-09-28 13:51 UTCEPSS rescore
  22. 2026-09-28 05:36 UTCEG score recompute
  23. 2026-09-28 05:36 UTCGHSA enrichment
  24. 2026-09-27 13:47 UTCEPSS rescore
  25. 2026-09-27 06:07 UTCEG score recompute
Show 75 more
  1. 2026-09-27 06:07 UTCGHSA enrichment
  2. 2026-09-26 15:58 UTCEPSS rescore
  3. 2026-09-25 00:49 UTCEG score recompute
  4. 2026-09-25 00:49 UTCGHSA enrichment
  5. 2026-09-23 21:07 UTCEG score recompute
  6. 2026-09-23 21:07 UTCGHSA enrichment
  7. 2026-09-22 21:38 UTCEG score recompute
  8. 2026-09-22 21:38 UTCGHSA enrichment
  9. 2026-09-21 22:08 UTCEG score recompute
  10. 2026-09-21 22:08 UTCGHSA enrichment
  11. 2026-09-20 22:38 UTCEG score recompute
  12. 2026-09-20 22:38 UTCGHSA enrichment
  13. 2026-09-19 23:09 UTCEG score recompute
  14. 2026-09-19 23:09 UTCGHSA enrichment
  15. 2026-09-18 23:39 UTCEG score recompute
  16. 2026-09-18 23:39 UTCGHSA enrichment
  17. 2026-09-18 19:27 UTCEPSS rescore
  18. 2026-09-18 00:09 UTCEG score recompute
  19. 2026-09-18 00:09 UTCGHSA enrichment
  20. 2026-09-16 23:12 UTCEG score recompute
  21. 2026-09-16 23:12 UTCGHSA enrichment
  22. 2026-09-16 14:07 UTCEPSS rescore
  23. 2026-09-16 05:14 UTCEPSS rescore
  24. 2026-09-15 23:42 UTCEG score recompute
  25. 2026-09-15 23:42 UTCGHSA enrichment
  26. 2026-09-14 23:53 UTCGHSA enrichment
  27. 2026-09-14 00:00 UTCEG score recompute
  28. 2026-09-14 00:00 UTCGHSA enrichment
  29. 2026-09-13 16:46 UTCEPSS rescore
  30. 2026-09-13 00:31 UTCEG score recompute
  31. 2026-09-13 00:31 UTCGHSA enrichment
  32. 2026-09-12 15:00 UTCEPSS rescore
  33. 2026-09-12 01:01 UTCEG score recompute
  34. 2026-09-12 01:01 UTCGHSA enrichment
  35. 2026-09-11 14:52 UTCEPSS rescore
  36. 2026-09-11 09:36 UTCEPSS rescore
  37. 2026-09-11 01:31 UTCEG score recompute
  38. 2026-09-11 01:31 UTCGHSA enrichment
  39. 2026-09-10 09:34 UTCEPSS rescore
  40. 2026-09-10 02:01 UTCGHSA enrichment
  41. 2026-09-09 02:32 UTCEG score recompute
  42. 2026-09-09 02:32 UTCGHSA enrichment
  43. 2026-09-08 22:00 UTCEPSS rescore
  44. 2026-09-07 16:01 UTCEPSS rescore
  45. 2026-09-07 11:30 UTCEG score recompute
  46. 2026-09-07 11:30 UTCGHSA enrichment
  47. 2026-09-06 13:47 UTCEPSS rescore
  48. 2026-09-06 11:57 UTCEG score recompute
  49. 2026-09-06 11:57 UTCGHSA enrichment
  50. 2026-09-05 12:28 UTCEG score recompute
  51. 2026-09-05 12:28 UTCGHSA enrichment
  52. 2026-09-04 12:58 UTCEG score recompute
  53. 2026-09-04 12:58 UTCGHSA enrichment
  54. 2026-09-04 05:06 UTCEPSS rescore
  55. 2026-09-03 13:28 UTCEG score recompute
  56. 2026-09-03 13:27 UTCGHSA enrichment
  57. 2026-09-02 14:11 UTCEPSS rescore
  58. 2026-09-02 13:54 UTCGHSA enrichment
  59. 2026-09-01 13:56 UTCEG score recompute
  60. 2026-09-01 13:56 UTCGHSA enrichment
  61. 2026-09-01 13:53 UTCEPSS rescore
  62. 2026-09-01 04:39 UTCEPSS rescore
  63. 2026-08-31 14:10 UTCEG score recompute
  64. 2026-08-31 14:10 UTCGHSA enrichment
  65. 2026-08-30 19:17 UTCEPSS rescore
  66. 2026-08-30 13:14 UTCEG score recompute
  67. 2026-08-30 13:14 UTCGHSA enrichment
  68. 2026-08-30 01:22 UTCEPSS rescore
  69. 2026-08-29 13:44 UTCEG score recompute
  70. 2026-08-29 13:44 UTCGHSA enrichment
  71. 2026-08-28 21:41 UTCEPSS rescore
  72. 2026-08-28 14:11 UTCGHSA enrichment
  73. 2026-08-27 14:41 UTCEG score recompute
  74. 2026-08-27 14:41 UTCGHSA enrichment
  75. 2026-08-27 14:25 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-16827?
CVE-2026-16827 is a medium vulnerability published on August 19, 2026. IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to the use of an uninitialized stack pointer.
When was CVE-2026-16827 disclosed?
CVE-2026-16827 was first published on August 19, 2026, with the most recent update on August 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16827 actively exploited?
CVE-2026-16827 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-16827?
CVE-2026-16827 has a CVSS base score of 5.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-16827?
A fix for CVE-2026-16827 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-16827 are linked in the Vendor Advisories panel on this page.

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